Finding the Fourth Proportional to 492,086.15, 679,093.28 and 288,117.99
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Solution
The fourth proportional to 492,086.15, 679,093.28 and 288,117.99 is: 397,611.25
Step by Step Solution
- Step 1: Write the proportion equation
492,086.15 : 679,093.28 = 288,117.99 : x - Step 2: Convert to fraction form
492,086.15/679,093.28 = 288,117.99/x - Step 3: Cross multiply
492,086.15x = 679,093.28 × 288,117.99 - Step 4: Simplify right side
492,086.15x = 195,658,990,856.11 - Step 5: Solve for x
x = 195,658,990,856.11/492,086.15 - Step 6: Final answer
x = 397,611.25
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.